2,225 research outputs found
Microbiological quality of commercial dairy products
The purpose of this research was to assess the hygienic properties of commercially available dairy foods.
The products surveyed included liquid milks (pasteurized and UHT-treated), cultured dairy products
(kefir, cultured buttermilk, sour cream, yogurt, probiotic fermented milks), cheeses (quarg products, soft,
semi-hard, hard, and extra hard cheeses made from bovine, caprine, and ovine milk), processed cheeses,
butters, butter creams, dried milks, and ice creams. A total of 320 samples were purchased from food
stores located in the western part of Hungary. Upon collection, all products were taken to the laboratory
and were stored as required until analysis. Although none of the samples tested contained Salmonella spp.
or Listeria monocytogens, approximately 14% of them failed to meet the legal requirements in terms of
overall hygienic quality. The share of non-compliant samples was especially high among cheeses
Combinatorial Nullstellensatz modulo prime powers and the Parity Argument
We present new generalizations of Olson's theorem and of a consequence of
Alon's Combinatorial Nullstellensatz. These enable us to extend some of their
combinatorial applications with conditions modulo primes to conditions modulo
prime powers. We analyze computational search problems corresponding to these
kinds of combinatorial questions and we prove that the problem of finding
degree-constrained subgraphs modulo such as -divisible subgraphs and
the search problem corresponding to the Combinatorial Nullstellensatz over
belong to the complexity class Polynomial Parity Argument (PPA)
Game Theory Models for the Verification of the Collective Behaviour of Autonomous Cars
The collective of autonomous cars is expected to generate almost optimal
traffic. In this position paper we discuss the multi-agent models and the
verification results of the collective behaviour of autonomous cars. We argue
that non-cooperative autonomous adaptation cannot guarantee optimal behaviour.
The conjecture is that intention aware adaptation with a constraint on
simultaneous decision making has the potential to avoid unwanted behaviour. The
online routing game model is expected to be the basis to formally prove this
conjecture.Comment: In Proceedings FVAV 2017, arXiv:1709.0212
Multi-Agent Cooperation for Particle Accelerator Control
We present practical investigations in a real industrial controls environment
for justifying theoretical DAI (Distributed Artificial Intelligence) results,
and we discuss theoretical aspects of practical investigations for
accelerator control and operation. A generalized hypothesis is introduced,
based on a unified view of control, monitoring, diagnosis, maintenance and
repair tasks leading to a general method of cooperation for expert systems
by exchanging hypotheses. This has been tested for task and result sharing
cooperation scenarios. Generalized hypotheses also allow us to treat the
repetitive diagnosis-recovery cycle as task sharing cooperation. Problems
with such a loop or even recursive calls between the different agents are
discussed
Refined position angle measurements for galaxies of the SDSS Stripe 82 co-added dataset
Position angle measurements of Sloan Digital Sky Survey (SDSS) galaxies, as
measured by the surface brightness profile fitting code of the SDSS photometric
pipeline (Lupton 2001), are known to be strongly biased, especially in the case
of almost face-on and highly inclined galaxies. To address this issue we
developed a reliable algorithm which determines position angles by means of
isophote fitting. In this paper we present our algorithm and a catalogue of
position angles for 26397 SDSS galaxies taken from the deep co-added Stripe 82
(equatorial stripe) images.Comment: 4 pages, 4 figures. Data are published on-line at
http://www.vo.elte.hu/galmorp
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